Yellow Fever is a daytime biting mosquito borne disease transmitted through a specific type of mosquito, aedes species. Yellow fever occurs in sub-Saharan Africa and tropical South America where it is endemic and intermittently epidemic. It has a short incubation period (3-5 days) and can be lethal. Like with most viral infections, there is no cure and one has to rely on symptomatic treatment.

It is the only disease that is mandatory for vaccination recommended by the WHO.